Correct me if I'm wrong, but an aircraft on a 2 mile final has priority over others and you're not supposd to cut in front or overtake, and your circuit position call call should be accurate and truthful.
If you were flying a straight in approach, then you do not have priority. You must give way to aircraft flying a standard traffic pattern.
Straight-in visual approaches: Aircraft fitted with a serviceable VHF air-band radio may conduct a straight in visual approach to land at any non-controlled aerodrome subject to the pilot-in-command determining beforehand the wind direction and runways in use, broadcasting intentions on the CTAF at the start of the approach, completing manoeuvring to establish the aircraft on the final approach path by 5 nm from the landing runway threshold, and giving way to any aircraft flying in the circuit pattern.
Now I am not defending the pilot other for flying what was probably not a standard pattern....
Bevan..